Belt connecter



E. H. KREMER BELT CONNECTER May 7, 1935.

2 Sheets-Sheet l Filed Jan. 17, 1934 y 1935- E, H. KREMER 2,000,598

BELT CONNECTER Fil ed Jan. 17, 1954 2 Sheets-Sheet 2 ATTORNEYS PatentedMay 7, 1935 I UNITED STATES PATENT OFFICE.

BELT CONNECTER Edward H. Kremen ljayton, Ohio, assignor to The DaytonRubber Manufacturing Company,

Dayton, Ohio, a corporation of Ohio 7 Application January 1'7, 1934,Serial No. 7063977 18 Claims. (01. apes) This invention relates to beltconnecters and, necter of my invention, showingits operation inparticular, to belt connecters having interwhen the oppositely-connectedbelt portions are penetrating members and pintle members held passingaround a pulley of small diameter, 01'. thereby. are otherwise at anvangle to one another. 77 V v 5 The problem faced by the applicant inmaking Figure 5 is a vertical section along the line '5 his inventionwas to provide a belt connecter of 5-4 of Figure 1; V j the above type,which would have means to pre-' Figure 6 is a horizontal section alongthe vent the rapid wear of the oppositely-engaging line 5-6 of Figure 2I I e V e 7 surfaces of the pintle members, and at the same Figure 7 isa vertical section similar to Figure 10 time prevent the dislocation ordisplacement of 5, but with pintle members of ordinary con- 10 thepintle members, such as is called cocking. struction, showing thedislocation thereof, which One object of my invention is to provide a myinvention prevents. n we belt connecter with inter-penetrating clampingFigure 8 is a top plan view of the twointermembers and pintle memberssupported thereby, engaging pintle members alone; in their enone ofwhich pintle members has provision for gaged position. H I 15 preventingits dislodgment from its proper 611- Figure Qis a perspective view ofthe two pintle gagement with the'other pintle. members separated. V j

Another object is to provide such a belt con Figure 10 is across sectionthrough the belt necter and pintle members wherein one of the along theline ill-Allof Figure 2. pintle members has laterally extended shouldersReferring to the drawings in detail, Figure 1 20 which engage acorresponding groove in the shows the ends I and 2 of a belt of rubberand opposite pintle member. I fabric construction as joined by oppositeclamp- Another object is to provide a belt connecter ing members,generally designated 3 and 4. The of the type above described, whereinthe pintle belt portions i and 2 are shown as having cut- Cal inglyflattened portions on the clamping memportions 6 which more readilypermit the inner bers. surface of the belt to become of shorter lengthAnother object is to provide such a belt conthan the outer surface, asis necessary in passnecter having pintle members, one having a ingaround pulleys of small diameter. It" is groove and flanged heads, andthe other having understood, however, that the cut-away portions 30 aridge deeper than the groove and an arcuate 5 and teeth 6 are optional;and that the coriface, the ridge being extended beyond its body necterof my invention may equally well be portion and engaging a groove in theflanged applied to belts without such cut-away portions. heads of theother pintle member, thereby de-- The clamp members 3 and ll oftheb'elteon -q ing engagement other than between theridge and lowerportions! and 8 oi which arebe'nt and groove, and preventing dislodgmentor toward one another in approximately parallel cooking of the parts. y9 positions, and held togetheragainst the opposite Another object is toprovide such a belt consides of the belt by the clampscre'ws 9. Wheremembers have flat backs'engaging'correspond-- away portions 5, therebyproviding tooth-likerzs" -creasing wear of the opposingsurfacesprevehtnecterf are bent roughly in a C shape; the upper -"necterwherein the clamping portions engage the the belt possesse'sthe cut-awayportions the, 40':

ends of a belt made of alternate layers of fabric ends-8 of the clampportions 3 I and 4 may be' and rubber, the belt beingflexibletransversely bent around as at I0 to: provide a firmer grip inthe plane of itsv pulleys, and longitudinally on the belt (Figure 2).

inextensible along its neutral a xis yet extensible The opposite clampportions 3 and 4 are along its outer portion and compressible alongprovided?with a plurality of inter-penetrating 45" its inner portion. V,portions ll and l2 respectively,' these being so In the drawings:arranged as to inter-lace with onefanotherand Figure l is a top planviewofmy belt con yet provide a space between one another forthe necter;in position to interconnect the ends of reception of the pintle membersI3 and M. The j a belt. v

Figure 2 is a side elevation of the belt conby the pull on the"oppositeends I and 2jof' the meter and belt endsshown in Figure 1. belt andprovidea' bearing arrangement' betwee'n',

Figure 3 is a'bottom plan view ofthe belt conthe oppositely-disposedand" interlaced clamp necterin Figuresl and 2. Q members H and 12. I, vFigure 4 is a side elevation of the belt -con- Thepintle' members f3 andI4 arelonga't'ed latter are held 'injengagement with one another '50"bodies (Figure 9) of opposite construction. The male pintle member l3has a body portion l5, preferably provided with an arcuate surface 16,and a rib i! extending therealong. The-rib I! is extended beyond eachend of the body portion l5 as at I8 and IS. The female pintle member 14is provided with flanged heads 2!; and 2! extending beyond its bodyportion 22, both being provided with a groove 23 running therealong fromone end to the other. The heads 20 and 2| are cut away on either side ofthe groove 23, as at 24, toprovide for free. rocking of the extended endportions I8 and IQ of themale pintle member l3. The ridge H is deeperthan itsgroove 23.

The belt itself (FigurelO) is preferably of rubber and fabricconstruction, so formed that it has transverse flexibility in the planeof its pulleys without having longitudinal extensibility in its neutralaxis 25. outer portion-26 is of such construction and its fabric soarranged as to provide a certain amount of longitudinal extensibilitywithout a corresponding lateral expansion or contraction. The innerportion 27, on the other hand, is of a different construction, providinglongitudinal compressibility without a lateral extension or contraction.By this construction, the neutral axis 25 remains. of substantiallyconstant length, whereas the upper portion may be expandedlongitudinally and the lower portion may be contratced longitudinally inpassing around pulleys. The neutral axis 25 contains a plurality ofcords 28 imbedded therein, these cords being tightly twisted and thussubstantially inextensible longitudinally.

In operation, the clamping members 3 and 4 are inter-engaged with theirtooth-like portions II and 12 passing one another in the intersticestherebetween (Figure l). The pintle members [3 and M are then placedtherebetween with the ridge ll of one in engagement with the groove 23of the other, yet with the body portion I5 of the male member heldbetween the end flanges 29 and 2! of the female pintle member. The endsI and 2 of the belt are now inserted within the clamping members 3 and 6(Figures 2 and 4) and secured in position by the clamping screws 9. o

As the belt ends change position from that shown in Figure 2, as in astraight run, to that shown in Figure 4, as in passing around a smallpulley, the male pintle portion l3 will rock in the female pintleportion i4. These two pintle members will be prevented from dislodgmentby the end portions i8 and 19 of the ridge I! engaging the groove 23 asit passes throughthe flanged heads 20 and 2| and by theprojection of thelatter at the cut-away portions 24. At

the same time,'the flanged heads engage one of the clamping members andalso the body portion 15 of the male pintle member I3, preventing bothfrom moving endwise.

In this manner the dislodgment, or cooking of the two pintle members, asoccurring in ordinary types (Figurefl'l) is thereby prevented. Withoutthe means for holding the opposite pintle members l3 and M in engagementwith one another, this dislocation frequently occurs, and often resultsin a breaking of the clamp and a consequent disruption in the service'of the machine to which it is applied. At the same time, the ordinarypintle members are subject to serious wear on their arcuate portionsespecially at the points 30 and 31. This wear is At the same timeitslargely reduced by my provision of the specially formed pintle membersof my invention, since the greater depth of the ridge if than the groove23 will keep the arcuate pintle face It from touching the opposite faceof the other pintle portion !4 during the rocking thereof. The flatbacks 34 and 35 of the pintle members l3 and M will engage the flattenedportions 3'5 and 3! of the clamping member tongues H and I2, furthertending to keep the pintle members l3 and M in engagement.

It will be understood that I desire to comprehend within my inventionsuch modifications as may be necessary to adapt it to varyingconditions' and uses.

Having thus fully described my invention, what I claim as new and desireto secure by LettersPatent is:

1. A belt connecter comprising interlaced clamping members having pintlemembers arranged therebetween, one of said pintle members having agroove, the other pintle member having a rib engaging said groove, saidrib extending beyond the body of its pintle member.

' 2. A belt connecter comprising interlaced clamping members havingpintle members arranged therebetween, one of said pintle members havinga. grooveand flanged heads, the other pintle member having a ribengaging said groove, said rib extending beyond the body of its pintlemember.

3. A belt connecter comprising interlaced clamping members having pintlemembers arranged therebetween, one of said pintle members having agroove and flanged heads, the other pintle member having a rib engagingsaid groove, said rib extending beyond the body of its pintle member andengaging grooves in said flanged heads.

4. A belt connecter comprising interlaced clamping members having pintlemembers arranged therebetween, said pintle members having inter-engagingmale and female portions, one of said portions having flanged endsadapted to prevent sidewise motion of the other portion, said otherportion having extended projections engaging grooves in said flangedends.

5. A belt connecter comprising interlaced clamping members having pintlemembers arranged therebetween, said pintle members having inter-engagingmale and female portions, one of said portions having flanged endsadapted to prevent sidewise motion of the other portion, said otherportion having extended projections engaging grooves in said flangedends, the body of the unflanged member being held between the flanges ofthe flanged member, whereby the inter-engaging portions may rock withoutdislodgment or sidewise motion.

6. A belt connecter comprising interlaced clamping members having pintlemembers arranged therebetween, said pintle members having inter-engagingmale and female portions, and means for preventing the dislodgment ofsaid portions frominter-engagement with one bers secured to the ends ofsaid belt and having inter-engaging pintle members with male andconnecter comprising interlaced clamping mem-' bers secured to the endsof said belt and having inter-engaging pintle 'members with male andfemale portions, one of said portions having flanged endsadapted toprevent sidewise motion of the other portion, said other portion havingextended projections engaging grooves in said flanged ends, the body ofthe unflanged member being held between the flanges of the flangedmember, whereby the inter-engaging portions may rock without dislodgmentor sidewise motion.

9. A pintle assembly for a belt connecter comprising a pair ofinter-engaging pintlemembers, one of said members having a groove, theother having a rib engaging said groove, said rib extending beyond thebody of its member.

10. A pintle assembly for a belt 'conne'cter comprising a pair ofinter-engaging pintle mem bers, one of said members having a groove, theother having a rib engaging said groove, said rib extending beyond thebody of its member and engaging grooved end flanges in said groovedpintle member.

11. A pintle member for a belt connecter comprising a body portionhaving arib, said rib being extended beyond the'ends-of said bodyportion.

12. A pintle assembly for a belt connecter comprising a pair ofinter-engaging pintle members with flat backs, one .of said membershaving a groove, the other having a rib of greater depth than saidgroove engaging it, said rib extending laterally beyond the body of itspintle member.

13. A pintle assembly for a belt connecter comprising a pair ofinter-engagingpintle members with flat backs, one of said members havinga groove, the other having a rib of greater depth than said grooveengaging it, said rib extending laterally beyond the body of its pintlearcuate face.

14. A pintle assembly for a belt connecter comprising a pair ofinter-engaging pintle mem-' bers, one of said members having a groove,the other having an arcuate surface with rib therealong adapted toengage said groove, said rib being deeper than said groove and extendinglaterally beyond the body of its pintle member.

15. A pintle assembly for a belt connecter comprising a pair ofinter-engaging pintle members with flat backs, one of said membershaving a groove, the other having a rib of greater depth than saidgroove engaging it, said rib extending laterally beyond the body of itspintle member, said end flanges being cut away to provide projectionsadapted to prevent dislodgment of said rib from said groove.

16. A belt connecter comprising interlaced clamping members withflattened portions, and pintle members arranged therebetween having flatbacks engaging said flattened portions, one of said pintle membershaving a groove and flanged heads, the other pintle member having a ribengaging said groove,said rib being deeper than said groove andextending laterally beyond the body of its pintle member.

17. A belt assembly comprising a belt having cut-away portions therein,and a belt connecter comprising interlaced clamping members se-' curedto the ends of said belt and having interengagingpintle members, saidclamping members having end portions adapted to hold the maximumthickness of the belt therebetween,

oneof said pintle portions having flanged ends adapted to preventsidewise motion of the other portion, said other portion having extendedprojeotionsengaging grooves in said flanged ends.

13.A belt connecter comprising interlaced clamping members havinginter-engaging pintle members arranged therebetween, one of said pintlemembers having flanged ends adapted to prevent endwise motion thereofrelative to said clamping members and also to prevent endwise motion ofthe other pintle member relative to I said flanged pintle member, saidother portion having extended projections engaging grooves in saidflanged ends.

EDWARD H. KREMER.

